Major Model Changes from 1978 until 1999.
Model year 1978
• The first SR 500
Model year 1979
• Optional Cast wheels
Model year 1984
• 18 inch front wheel
• 2.15 inch rear rim
• Narrow sports type handlebar
Model year 1988
• Classic drum brake
• 14 litre fuel tank
Model year 1999
• The final version
